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发明名称
Air filter
摘要
申请公布号
US2450610(A)
申请公布日期
1948.10.05
申请号
US19440517491
申请日期
1944.01.08
申请人
PIERCE EDWIN G
发明人
PIERCE EDWIN G.
分类号
A62B21/00
主分类号
A62B21/00
代理机构
代理人
主权项
地址
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